Crystallization behaviors and rheological properties of biodiesel derived from methanol and ethanol

Chen, Wu‐Hua; Wang, Yefei; Ding, Mingchen; Shi, Shenglong; Yang, Zhen

doi:10.1016/j.fuel.2017.06.121

Cited by 15 publications

(11 citation statements)

References 34 publications

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“…At present, many alternatives are used to improve this problem of biodiesel, including addition of cold flow improvers, blending with petrodiesel, fractionating by crystallization and blending of biodiesels with different compositions. [8][9][10] Important properties of the pure esters and blends can be evaluated by thermoanalytical techniques, such as thermogravimetric analysis (TGA), differential thermogravimetric analysis (DTG) and differential scanning calorimetry (DSC), under different atmospheres. [11][12][13] When the TGA/DTG analysis is carried out in an oxidative atmosphere (mixture of air or oxygen and inert gas) with a linear temperature ramp, the maximum temperature is selected by where the sample weight is stable at the end of the experiment, implying that all chemical reactions have been completed.…”

Section: Introductionmentioning

confidence: 99%

“…This technique has been used to determine the low temperature properties of biodiesel, as for example the onset temperature crystallization. 8,15 In the present work, methyl and ethyl esters from seed oil of babassu were synthesized and their thermo-oxidative stabilities were investigated using TGA and DTG, under synthetic air atmosphere at 10 °C min −1 heat rate. In addition, blends of esters from babassu and soybean oils were prepared and their low temperature properties were investigated by DSC.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Properties of the Blends of Methyl and Ethyl Esters Prepared from Babassu and Soybean Oils

Nicolau

Klein

Silva

et al. 2018

J. Braz. Chem. Soc.

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The ester content of all the blends was higher than 96.5%, which is the minimum value required by the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (Agência Nacional do Petróleo, Gás Natural e Biocombustíveis, ANP). The thermal properties of the babassu, soybean and binary mixtures of esters were investigated by thermogravimetry-differential thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). The thermal stability of the blended biodiesels decreased as the total contents of the babassu esters increased. From the experiments it was found that babassu methanol biodiesel is stable up to 49.6 °C and the ethanol biodiesel is stable up to 53.7 °C in air. The methyl esters blends were thermally stable up to 83.2 and 56.8 °C, for 90:10 and 50:50 blends (soybean:babassu), respectively. The ethyl ester blends presented values of temperature ranges somewhat higher than the methyl esters, such as 85.2 and 64.5 °C for 90:10 and 50:50 blends, respectively. The esters from babassu oil have satisfactory performance at low temperatures with respect to the point of crystallization, which were below-9.8 °C for ethylic esters and-8.5 °C for methylic esters. A good correlation between the crystallization onset temperature and the increase in the concentration of the babassu oil esters was obtained in the mixtures analyses. In the 50:50 combination (babassu:soybean), the crystallization onset temperature were-6.73 and-9.12 °C for methyl and ethyl esters, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Properties of the Blends of Methyl and Ethyl Esters Prepared from Babassu and Soybean Oils

Nicolau

Klein

Silva

et al. 2018

J. Braz. Chem. Soc.

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“…These are consistent with other findings, indicating a higher-onset temperature for saturated components and a lower-onset temperature for unsaturated components. 27 , 31 The B100 onset of −10.1 °C is in general agreement with the DU trends found for methyl tallowate (DU 73.6, onset 7.0°C), soybean oil methyl ester (DU 84.5, onset 2.20 °C), hemp methyl ester (DU 128.5, onset −5.27 °C), methyl soyate (DU 143.8, onset −6.5 °C), and Aleurties moluccanus methyl ester (DU 180.4, onset −9.96 °C). 30 , 31 , 34 …”

Section: Results and Discussionmentioning

confidence: 99%

Locally Sustainable Biodiesel Production from Waste Cooking Oil and Grease Using a Deep Eutectic Solvent: Characterization, Thermal Properties, and Blend Performance

et al. 2021

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As part of local sustainability efforts, biodiesel was synthesized via transesterification using a deep eutectic solvent (DES) without further washing from on-campus, dining facility waste cooking oil and grease. Before moving forward with repurposing used DES as a solvent in chemistry teaching labs, we determined the suitability of the biodiesel as an alternative fuel blended with diesel to power campus utility vehicles. Biodiesel components were characterized by gas chromatography–mass spectrometry (GC–MS), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy ( 1 H NMR), viscometer, differential scanning calorimetry (DSC), and evolved gas analysis during pyrolysis with a thermogravimetric analyzer coupled with FTIR (TGA-FTIR). The four major components of fatty acid methyl esters (FAMEs) in the biodiesel were methyl oleate, methyl linoleate, methyl palmitate, and methyl stearate. Kinematic viscosity over typical temperature ranges was within optimal values recommended by the American Biodiesel Standard (ASTM D6751), with a 30:70 biodiesel/diesel blend experimental viscosity of 3.43 cSt at 40 °C and a calculated viscosity of 10.13 cSt at 0 °C. The pure biodiesel’s cold-temperature onset of crystal formation is −10.1 °C versus −16.4 °C for a 30:70 biodiesel/diesel blend. Pyrolysis indicates good thermal stability, however, with an increased CO 2 evolution in the blended fuel at higher temperatures as compared to that in the pure biodiesel and the pure diesel. Combustion gas analysis indicates virtually complete combustion of the blended fuel to CO 2 and H 2 O with only trace amounts of CO. Overall results indicate that the biodiesel synthesized using DES is a suitable fuel for campus utility vehicles in the local moderate temperature climate and affords increased local sustainability by using used DES repurposed in our chemistry teaching labs.

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“…Its compound structure is that of unsaturated fat alkyl esters. As a fuel, Biodiesel gives air discharges which are much lower poisonous than fossil diesel [53]. It gives cleaner consuming and has less sulphur substance; and, in this way it decreases discharges.…”

Section: Biodieselmentioning

confidence: 99%

A Review on Biogas Plants and Bio energy Generation Methods: Merits and Demerits

Diaz¹

2017

SREYAS IJST

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The decrease and unreasonable utilization of petroleum derivatives and the effect of greenhouse gases on nature are driving exploration into sustainable power source development from natural assets and waste. The worldwide vitality request is high, and a large portion of this energy is developed from fossil fuels. Recent investigations report that Anaerobic Digestion (AD) is a proficient option innovation that joins bio-fuel yield with reasonable waste administration; and, different mechanical patterns exist in the biogas business which upgrades the generation and nature of biogas. Profound interests in AD are relied upon to meet with the expanding accomplishments because of the minimal effort of accessible nourish stocks and the extensive variety of employments for biogas (i.e., for warming, power and fuel). Biogas formation is urged in numerous countries to build up the commercial market and offers a conservative option for bio-energy generation. In India, many States are empowering their kin and supporting them financially to build bio plants. The goal of this paper is to give a review of biogas plants, sorts of waste used to deliver biogas, approaches to produce biogas and issues in the biogas generation.

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Crystallization behaviors and rheological properties of biodiesel derived from methanol and ethanol

Cited by 15 publications

References 34 publications

Thermal Properties of the Blends of Methyl and Ethyl Esters Prepared from Babassu and Soybean Oils

Thermal Properties of the Blends of Methyl and Ethyl Esters Prepared from Babassu and Soybean Oils

Locally Sustainable Biodiesel Production from Waste Cooking Oil and Grease Using a Deep Eutectic Solvent: Characterization, Thermal Properties, and Blend Performance

A Review on Biogas Plants and Bio energy Generation Methods: Merits and Demerits

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